Roger Federer: 10 things you didn't know about legendary tennis star

Roger Federer is the greatest tennis player of all time – but how much do you really know about him?

1. Classified ‘unfit’ to serve in Swiss military due to back problems in 2003

“This is an exciting challenge, I’ve struggled to try and get there. I had to win a lot of matches last year,” Federer said.

“I never imagined this after my (January 2017) knee surgery. Number one is a tough place to get to.

“I would have had great regrets if I had not come here this week.

“I’m very excited for the match [against Haase], I can’t wait for it to come around.”

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Roger Federer: Swiss star expected Rafael Nadal to stay at the summit

Federer has, however, downplayed the nation that he is the best player in the world.

“I don't wake up thinking that I am the best player in the world, I don't feel comfortable with it, and it's not true either, I am still playing and we will never know who will come after me,” he said.

“Times changed a lot, Grand Slams are a lot more important than before.